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[image]Jets of Outflowing Gas Burst from a Forming Star - NASA/IPAC/R. Hurt
Jets of outflowing gas burst from a forming star still accumulating material from the surrounding disk.
Downloads: 16
[image]Sequence of Astronomical Objects in Visible Light - NASA/IPAC/R. Hurt
This figure shows an artist's rendition comparing brown dwarfs to stars and planets. All objects are plotted to the same scale. On the far left is the limb of the Sun. To its right is shown a very low mass star (a so-called "late-M dwarf"), a couple of brown dwarfs (a hotter "L dwarf" and a cooler "T dwarf"), and the planet Jupiter. These objects have masses ranging from 1050 times that of Jupiter (for the Sun) through 75, 65, 30, and 1 Jupiter mass for the late-M dwarf, L dwarf, T dwarf, and Ju...
Keywords: What -- Sun; What -- Jupiter; What -- Visible Light
Downloads: 17
[image]Steaming Hot Planet in Infrared - ESA - C. Carreau
Scientists have reported the first conclusive discovery of water vapor in the atmosphere of an exoplanet, or a planet beyond our solar system. This artist's impression shows an infrared view of a gas-giant exoplanet transiting across the face of its star. NASA's Spitzer Space Telescope observed this type of system in infrared light, providing the breakthrough. The planet, HD 189733b, lies 63 light-years away in the constellation Vulpecula...
Keywords: What -- Discovery; What -- Spitzer Space Telescope; What -- Constellation; What -- Vulpecula
Downloads: 12
[image]Galactic Pileup - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept illustrates one of the largest smash-ups of galaxies ever observed. NASA's Spitzer Space Telescope spotted the four galaxies shown here (yellow blobs) in the process of tangling and ultimately merging into a single gargantuan galaxy. Though the galaxies appear to be fairly intact, gravitational disturbances have caused them to distort and twist, flinging stars (white dots) everywhere like sand...
Keywords: What -- Spitzer Space Telescope
Downloads: 11
[image]Water's Early Journey in a Solar System - NASA/JPL-Caltech/R. Hurt (SSC)
NASA's Spitzer Space Telescope observed a fledgling solar system like the one depicted in this artist's concept, and discovered deep within it enough water vapor to fill the oceans on Earth five times. This water vapor starts out in the form of ice in a cloudy cocoon (not pictured) that surrounds the embryonic star, called NGC 1333-IRAS 4B (buried in center of image). Material from the cocoon, including ice, falls toward the center of the cloud...
Keywords: What -- Spitzer Space Telescope; What -- Earth; What -- Infrared Astronomical Satellite (IRAS); Where -- NGC 1
Downloads: 16
[image]Distance to Dark Bodies - NASA/JPL-Caltech/R. Hurt (SSC)
Using the unique orbit of NASA's Spitzer Space Telescope and a depth-perceiving trick called parallax, astronomers have determined the distance to an invisible Milky Way object called OGLE-2005-SMC-001. This artist's concept illustrates how this trick works: different views from both Spitzer and telescopes on Earth are combined to give depth perception. Our Milky Way galaxy is heavier than it looks, and scientists use the term "dark matter" to describe all the "heavy stuff" in the universe that ...
Keywords: What -- Spitzer Space Telescope; What -- Earth; What -- Advanced Communication Technology Satellite (ACTS); Where -- Milky Way Galaxy; Where -- Small Magellanic Cloud
Downloads: 8
[image]Fantastic Four' Galaxies (with planet) - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept shows what the night sky might look like from a hypothetical planet around a star tossed out of an ongoing four-way collision between big galaxies (yellow blobs). NASA's Spitzer Space Telescope spotted this "quadruple merger" of galaxies within a larger cluster of galaxies located nearly 5 billion light-years away. Though the galaxies appear intact, gravitational disturbances have caused them to stretch and twist, flinging billions of stars into space -- nearly three times ...
Keywords: What -- Spitzer Space Telescope; Where -- Milky Way Galaxy
Downloads: 20
[image]Dust in the Quasar Wind - NASA/JPL-Caltech/T. Pyle (SSC)
Dusty grains -- including tiny specks of the minerals found in the gemstones peridot, sapphires, and rubies -- can be seen blowing in the winds of a quasar, or active black hole, in this artist's concept. The quasar is at the center of a distant galaxy. Astronomers using NASA's Spitzer Space Telescope found evidence that such quasar winds might have forged these dusty particles in the very early universe...
Keywords: What -- Galaxy 8; What -- Spitzer Space Telescope; What -- Infrared Spectrograph (IRS)
Downloads: 13
[image]Bursting with Stars and Black Holes - NASA/JPL-Caltech/T. Pyle (SSC)
A growing black hole, called a quasar, can be seen at the center of a faraway galaxy in this artist's concept. Astronomers using NASA's Spitzer and Chandra space telescopes discovered swarms of similar quasars hiding in dusty galaxies in the distant universe. The quasar is the orange object at the center of the large, irregular-shaped galaxy. It consists of a dusty, doughnut-shaped cloud of gas and dust that feeds a central supermassive black hole...
Keywords: What -- Earth
Downloads: 12
[image]Steaming Hot Planet - ESA - C. Carreau
Scientists have reported the first conclusive discovery of water vapor in the atmosphere of an exoplanet, or a planet beyond our solar system. This artist's impression shows a gas-giant exoplanet transiting across the face of its star. Infrared analysis by NASA's Spitzer Space Telescope of this type of system provided the breakthrough. The planet, HD 189733b, lies 63 light-years away in the constellation Vulpecula...
Keywords: What -- Discovery; What -- Spitzer Space Telescope; What -- Constellation; What -- Vulpecula
Downloads: 11
[image]Steamy Solar System - NASA/JPL-Caltech/T. Pyle (SSC)
This diagram illustrates the earliest journeys of water in a young, forming star system. Stars are born out of icy cocoons of gas and dust. As the cocoon collapses under its own weight in an inside-out fashion, a stellar embryo forms at the center surrounded by a dense, dusty disk. The stellar embryo "feeds" from the disk for a few million years, while material in the disk begins to clump together to form planets...
Keywords: What -- Spitzer Space Telescope; What -- Infrared Astronomical Satellite (IRAS); Where -- NGC 1
Downloads: 9
[image]Highway to the Danger Zone - NASA/JPL-Caltech/T. Pyle (SSC)
"The further on the edge, the hotter the intensity," sings Kenny Loggins in "Danger Zone," a song made famous by the movie "Top Gun". The same words ring true for young, cooler stars like our sun that live in the danger zones around scorching hot stars, called O-stars. The closer a young, maverick star happens to be to a super hot O-star, the more likely its burgeoning planets will be blasted into space...
Keywords: What -- Sun; What -- Spitzer Space Telescope
Downloads: 18
[image]Blacker than Black - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept illustrates the hottest planet yet observed in the universe. The scorching ball of gas, a "hot Jupiter" called HD 149026b, is a sweltering 3,700 degrees Fahrenheit (2,040 degrees Celsius) -- about 3 times hotter than the rocky surface of Venus, the hottest planet in our solar system. The planet is so hot that astronomers believe it is absorbing almost all of the heat from its star, and reflecting very little to no light...
Keywords: What -- Jupiter; What -- Venus; What -- Spitzer Space Telescope; What -- Visible Light; What -- Earth; What -- Moon; What -- Sun; What -- Constellation; What -- Hercules
Downloads: 10
[image]Solar System with Snug Suns - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept depicts a faraway solar system like our own -- except for one big difference. Planets and asteroids circle around not one, but two suns. NASA's Spitzer Space Telescope found evidence that such solar systems might be common in the universe. Spitzer did not see any planets directly, but it detected dust that is kicked up from disks of asteroids and comets like the one depicted here...
Keywords: What -- Spitzer Space Telescope; What -- COMETS; What -- Earth; What -- Sun
Downloads: 15
[image]Hot, Dry, and Cloudy - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept shows a cloudy Jupiter-like planet that orbits very close to its fiery hot star. NASA's Spitzer Space Telescope was recently used to capture spectra, or molecular fingerprints, of two "hot Jupiter" worlds like the one depicted here. This is the first time a spectrum has ever been obtained for an exoplanet, or a planet beyond our solar system. The ground-breaking observations were made with Spitzer's spectrograph, which pries apart infrared light into its basic wavelengths, ...
Keywords: What -- Jupiter; What -- Spitzer Space Telescope; What -- Visible Light; What -- Constellation; What -- Pegasus; What -- Vulpecula
Downloads: 12
[image]Alien Sunset - NASA/JPL-Caltech/R. Hurt (SSC)
Our solitary sunsets here on Earth might not be all that common in the grand scheme of things. New observations from NASA's Spitzer Space Telescope have revealed that mature planetary systems -- dusty disks of asteroids, comets, and possibly planets -- are more frequent around close-knit twin, or binary, stars than single stars like our sun. That means sunsets like the one portrayed in this artist's photo concept, and more famously in the movie Star Wars, might be quite commonplace in the univer...
Keywords: What -- Earth; What -- Spitzer Space Telescope; What -- COMETS; What -- Sun
Downloads: 24
[image]Where Planets Take Up Residence - NASA/JPL-Caltech/T. Pyle (SSC)
This diagram illustrates that mature planetary systems like our own might be more common around twin, or binary, stars that are either really close together, or really far apart. NASA's Spitzer Space Telescope observed that debris disks, which are signposts of mature planetary systems, are more abundant around the tightest and widest of binary stars it studied. Specifically, the infrared telescope found significantly more debris disks around binary stars that are 0 to 3 astronomical units apart ...
Keywords: What -- Spitzer Space Telescope; What -- Earth; What -- Sun; What -- Jupiter; What -- Pluto
Downloads: 7
[image]Depth Perception in Space - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept shows how astronomers use the unique orbit of NASA's Spitzer Space Telescope and a depth-perceiving trick called parallax to determine the distance of dark planets, black holes, and failed stars which lurk invisibly among us. These objects do not produce light, and are too faint to detect from Earth. However, astronomers can deduce their presence from the way they affect the light from background objects...
Keywords: What -- Spitzer Space Telescope; What -- Earth; Where -- Small Magellanic Cloud
Downloads: 7
[image]How to Pluck a Spectrum from a Planet - NASA/JPL-Caltech/R. Hurt (SSC)
This diagram illustrates how astronomers using NASA's Spitzer Space Telescope can capture the elusive spectra of hot-Jupiter planets. Spectra are an object's light spread apart into its basic components, or wavelengths. By dissecting light in this way, scientists can sort through it and uncover clues about the composition of the object giving off the light. To obtain a spectrum for an object, one first needs to capture its light...
Keywords: What -- Spitzer Space Telescope; What -- Jupiter
Downloads: 6
[image]Gas Giants Form Quickly - NASA/JPL-Caltech/T. Pyle (SSC)
This is an artist's concept of a hypothetical 10-million-year-old star system. The bright blur at the center is a star much like our sun. The other orb in the image is a gas-giant planet like Jupiter. Wisps of white throughout the image represent traces of gas. Astronomers using NASA's Spitzer Space Telescope have found evidence showing that gas-giant planets either form within the first 10 million years of a sun-like star's life, or not at all...
Keywords: What -- Sun; What -- Jupiter; What -- Spitzer Space Telescope; What -- Infrared Spectrometer; What -- Spectrometer; What -- Earth; What -- Saturn
Downloads: 13
[image]Stars Can't Spin Out of Control - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept shows a dusty planet-forming disk in orbit around a whirling young star. NASA's Spitzer Space Telescope found evidence that disks like this one can slow their stars down, which prevents the stars from spinning themselves to death. A developing star is essentially a giant ball of gas that is collapsing onto itself. As it shrinks, it spins faster and faster, like a skater folding in his or her arms...
Keywords: What -- Spitzer Space Telescope; What -- FAST; What -- Saturn; What -- Orion
Downloads: 8
[image]Once an Onion, Always an Onion - NASA/JPL-Caltech/L. Rudnick (Univ. of Minn.)
This artist's concept illustrates a massive star before and after it blew up in a cataclysmic "supernova" explosion. NASA's Spitzer Space Telescope found evidence that this star -- the remains of which are named Cassiopeia A -- exploded with some degree of order, preserving chunks of its onion-like layers as it blasted apart. Cassiopeia A is located 10,000 light-years away in the constellation Cassiopeia...
Keywords: What -- Spitzer Space Telescope; What -- Cassiopeia; What -- Constellation; What -- Sun; What -- Earth; What -- Visible Light
Downloads: 7
[image]Exotic World Blisters Under the Sun - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept shows a Jupiter-like planet soaking up the scorching rays of its nearby "sun." NASA's Spitzer Space Telescope used its heat-seeking infrared eyes to figure out that a gas-giant planet like the one depicted here is two-faced, with one side perpetually in the cold dark, and the other forever blistering under the heat of its star. The illustration portrays how the planet would appear to infrared eyes, showing temperature variations across its surface...
Keywords: What -- Jupiter; What -- Sun; What -- Spitzer Space Telescope; What -- Constellation; What -- Andromeda; What -- Mercury; What -- FAST; What -- Moon; What -- Earth
Downloads: 10
[image]Galactic Hearts of Glass - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept shows the violent core of a pair of colliding galaxies and the delicate greenish crystals that are sprinkled throughout the core. The white spots represent a thriving population of stars of all sizes and ages. NASA's Spitzer Space Telescope detected more than 20 bright and dusty galactic mergers like the one depicted here, all teeming with the tiny gem-like crystals. When galaxies collide, they trigger the birth of large numbers of massive stars...
Keywords: What -- Spitzer Space Telescope; What -- FAST; What -- Andromeda
Downloads: 9
[image]Extreme Planets - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept depicts the pulsar planet system discovered by Aleksander Wolszczan in 1992. Wolszczan used the Arecibo radio telescope in Puerto Rico to find three planets - the first of any kind ever found outside our solar system - circling a pulsar called PSR B1257+12. Pulsars are rapidly rotating neutron stars, which are the collapsed cores of exploded massive stars. They spin and pulse with radiation, much like a lighthouse beacon...
Keywords: What -- Beacon; What -- Earth; What -- Discovery; What -- Spitzer Space Telescope; Where -- Puerto Rico
Downloads: 21
[image]Portrait of Our Dusty Past - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept illustrates a solar system that is a much younger version of our own. Dusty disks, like the one shown here circling the star, are thought to be the breeding grounds of planets, including rocky ones like Earth. Astronomers using NASA's Spitzer Space Telescope spotted some of the raw ingredients for DNA and protein in one such disk belonging to a star called IRS 46. The ingredients, gaseous precursors to DNA and protein called acetylene and hydrogen cyanide, were detected in ...
Keywords: What -- Earth; What -- Spitzer Space Telescope; What -- Infrared Spectrograph (IRS)
Downloads: 13
[image]Stellar Rubble May Be Planetary Building Blocks - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept depicts a type of dead star called a pulsar and the surrounding disk of rubble discovered by NASA's Spitzer Space Telescope. The pulsar, called 4U 0142+61, was once a massive star until about 100,000 years ago when it blew up in a supernova explosion and scattered dusty debris into space. Some of that debris was captured into what astronomers refer to as a "fallback disk," now circling the remaining stellar core, or pulsar...
Keywords: What -- Spitzer Space Telescope
Downloads: 7
[image]How To Make Comet Soup - NASA/JPL-Caltech/R. Hurt (SSC)
Hungry for a comet? Perhaps not, but astronomers using data from NASA's Spitzer Space Telescope and the Deep Impact mission are putting together a recipe for comet "soup" -- the primordial stuff of planets, comets, and other bodies in our solar system. The comet ingredients were excavated from comet Tempel 1 on July 4, 2005, when Deep Impact's probe plunged below its surface. While Deep Impact was busy collecting data up close, other telescopes around the world were also watching from the ground...
Keywords: What -- Spitzer Space Telescope; What -- Deep Impact; What -- COMETS; What -- Infrared Spectrometer; What -- Spectrometer; Where -- California
Downloads: 39
[image]Supersized Disk - NASA/JPL-Caltech/R. Hurt (SSC)
This illustration compares the size of a gargantuan star and its surrounding dusty disk (top) to that of our solar system. Monstrous disks like this one were discovered around two "hypergiant" stars by NASA's Spitzer Space Telescope. Astronomers believe these disks might contain the early "seeds" of planets, or possibly leftover debris from planets that already formed. The hypergiant stars, called R 66 and R 126, are located about 170,000 light-years away in our Milky Way's nearest neighbor gala...
Keywords: What -- Spitzer Space Telescope; What -- Sun; What -- Earth; Where -- Large Magellanic Cloud
Downloads: 9
[image]Alien Asteroid Belt Compared to our Own - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept illustrates what the night sky might look like from a hypothetical alien planet in a star system with an asteroid belt 25 times as massive as the one in our own solar system (alien system above, ours below). NASA's Spitzer Space Telescope found evidence for such a belt around the nearby star called HD 69830, when its infrared eyes spotted dust, presumably from asteroids banging together...
Keywords: What -- Spitzer Space Telescope; What -- Dawn; What -- Sun; Where -- Milky Way Galaxy
Downloads: 15
[image]Artist's Impression of Massive Star Cluster - NASA, ESA and A. Schaller (for STScI)
This is an illustration of one of the most massive star clusters within our Milky Way Galaxy. The cluster is ablaze with the glow of 14 rare red supergiant stars. Interspersed among the supergiants are young blue stars. The cluster contains an estimated 20,000 stars and is 20 times more massive than typical clusters in our galaxy. The cluster is located in the direction of the Galaxy's center. Its visible light is obscured by interstellar dust, but infrared telescopes easily detect the cluster's...
Keywords: What -- Visible Light; What -- Sun; Where -- Milky Way Galaxy
Downloads: 13
[image]Sowing the Seeds of Planets? - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept shows microscopic crystals in the dusty disk surrounding a brown dwarf, or "failed star." The crystals, made up of a green mineral found on Earth called olivine, are thought to help seed the formation of planets. NASA's Spitzer Space Telescope detected the tiny crystals circling around five brown dwarfs, the cooler and smaller cousins of stars. Though crystallized minerals have been seen in space before -- in comets and around other stars -- the discovery represents the fir...
Keywords: What -- Earth; What -- Spitzer Space Telescope; What -- COMETS; What -- Discovery
Downloads: 10
[image]Comet 'Bites the Dust' Around Dead Star - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept illustrates a comet being torn to shreds around a dead star, or white dwarf, called G29-38. NASA's Spitzer Space Telescope observed a cloud of dust around this white dwarf that may have been generated from this type of comet disruption. The findings suggest that a host of other comet survivors may still orbit in this long-dead solar system. The white dwarf G29-38 began life as a star that was about three times as massive as our sun...
Keywords: What -- Spitzer Space Telescope; What -- Sun; What -- Earth; What -- Jupiter; What -- Neptune; What -- COMETS
Downloads: 10
[image]Out of the Darkness Comes Stars - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept shows what the very early universe might have looked like, just after its first stars began bursting onto the scene. Scientists theorize that the universe arose around 13.7 billion years ago in an explosion known as the Big Bang. Almost instantaneously afterward, matter began clumping together due to quantum fluctuations. Gravity kicked in next, causing those clumps to grow into larger clouds of invisible hydrogen gas (colored blue here)...
Keywords: What -- Sun; What -- Spitzer Space Telescope
Downloads: 11
[image]Ingredients of a Comet - NASA/JPL-Caltech/R. Hurt (SSC)
Astronomers using data from NASA's Spitzer Space Telescope and the Deep Impact mission are putting together a recipe for comet "soup" -- the primordial stuff of planets, comets, and other bodies in our solar system. The comet ingredients were excavated from comet Tempel 1 on July 4, 2005, when Deep Impact's probe plunged below its surface. While Deep Impact was busy collecting data up close, other telescopes around the world were also watching from the ground and space...
Keywords: What -- Spitzer Space Telescope; What -- Deep Impact; What -- COMETS; What -- Infrared Spectrometer; What -- Spectrometer; Where -- California
Downloads: 12
[image]Belt of Dust - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept depicts a distant hypothetical solar system, similar to the one recently discovered with the Spitzer Space Telescope [ http://www.spitzer.caltech.edu/Media/happenings/20051214/index.shtml ]. In this artist's rendering, a narrow asteroid belt filled with rocks and dusty debris, orbits a star similar to our own Sun when it was approximately 30 million years old (about the time Earth formed)...
Keywords: What -- Spitzer Space Telescope; What -- Sun; What -- Earth; What -- Saturn; What -- Jupiter
Downloads: 14
[image]Sequence of Astronomical Objects in Infrared Light - NASA/IPAC/R. Hurt
This figure shows an artist's rendition comparing brown dwarfs to stars and planets. All objects are plotted to the same scale. On the far left is the limb of the Sun. To its right is shown a very low mass star (a so-called "late-M dwarf"), a couple of brown dwarfs (a hotter "L dwarf" and a cooler "T dwarf"), and the planet Jupiter. These objects have masses ranging from 1050 times that of Jupiter (for the Sun) through 75, 65, 30, and 1 Jupiter mass for the late-M dwarf, L dwarf, T dwarf, and Ju...
Keywords: What -- Sun; What -- Jupiter
Downloads: 7
[image]Space Eyes See Comet Tempel 1 - NASA/JPL-Caltech/T. Pyle (SSC)
These artist's concepts of Tempel 1 simulate an optical view of the comet (left), next to the simulated infrared view (right). The images illustrate the comet's shape, reflectivity, rotation rate and surface temperature, based on information from NASA's Hubble Space Telescope and Spitzer Space Telescope. Measurements from the Great Observatories indicate that the comet is a matte black object roughly 14 by 4 kilometers (8.7 by 2.5 miles), or about one-half the size of Manhattan...
Keywords: What -- COMETS; What -- Hubble Space Telescope (HST); What -- Spitzer Space Telescope
Downloads: 7
[image]Blinded by the Light - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept shows what a fiery hot star and its close-knit planetary companion might look close up if viewed in visible (left) and infrared light. In visible light, a star shines brilliantly, overwhelming the little light that is reflected by its planet. In infrared, a star is less blinding, and its planet perks up with a fiery glow. Astronomers using NASA's Spitzer Space Telescope took advantage of this fact to directly capture the infrared light of two previously detected planets orb...
Keywords: What -- Visible Light; What -- Spitzer Space Telescope; What -- Sun; What -- Jupiter; Where -- Arizona
Downloads: 11
[image]Ingredients for Life - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's conception symbolically represents complex organic molecules, known as polycyclic aromatic hydrocarbons, seen in the early universe. These large molecules, comprised of carbon and hydrogen, are considered among the building blocks of life. NASA's Spitzer Space Telescope is the first telescope to see polycyclic aromatic hydrocarbons so early -- 10 billion years further back in time than seen previously...
Keywords: What -- Spitzer Space Telescope; What -- Earth
Downloads: 7
[image]Massive Smash-Up at Vega - NASA/JPL-Caltech/T. Pyle (SSC)
This artist concept illustrates how a massive collision of objects, perhaps as large as the planet Pluto, smashed together to create the dust ring around the nearby star Vega. New observations from NASA's Spitzer Space Telescope indicate the collision took place within the last one million years. Astronomers think that embryonic planets smashed together, shattered into pieces, and repeatedly crashed into other fragments to create ever finer debris...
Keywords: What -- Pluto; What -- VEGA; What -- Spitzer Space Telescope
Downloads: 18
[image]Artist's Conception of Sedna - NASA/JPL-Caltech/R. Hurt (SSC)
In this artist's visualization, the newly discovered planet-like object, dubbed "Sedna," is shown where it resides at the outer edges of the known solar system. The object is so far away that the Sun appears as an extremely bright star instead of the large, warm disc observed from Earth. All that is known about Sedna's appearance is that it has a reddish hue, almost as red and reflective as the planet Mars...
Keywords: What -- Sedna; What -- Sun; What -- Earth; What -- Mars; What -- Moon
Downloads: 7
[image]The Rocky World of Young Planetary Systems - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept illustrates how planetary systems arise out of massive collisions between rocky bodies. New findings from NASA's Spitzer Space Telescope show that these catastrophes continue to occur around stars even after they have developed full-sized planets, when they are as old as one hundred million years. For reference, our own Sun, at 4.5 billion years old, is far past this late stage of planet formation...
Keywords: What -- Spitzer Space Telescope; What -- Sun
Downloads: 11
[image]Model of AU Microscopii Disk - NASA/ESA/J. Krist (STScI and JPL) & G. Bacon (STScI)
This is a so-called scatter model based on the Hubble Space Telescope image of the planetary debris encircling the star AU Microscopii. Though the real disk is tilted nearly edge-on to Earth, this oblique view is from 30 degrees above the disk plane. This model clearly shows a central hole that may have been swept out by an unseen planet. Holes in the centers of young dusty disks are common among stars and are compelling circumstantial evidence for planets.
Keywords: What -- Hubble Space Telescope (HST); What -- Earth
Downloads: 8
[image]Illustration of a Light Echo - NASA/JPL-Caltech/R. Hurt (SSC)
Imagine yourself standing in a large open chamber like an aircraft hangar. If you clap your hands, you will be rewarded with a series of echoes reverberating through the building. These sound echoes are very much like a phenomenon astronomers have dubbed "light echoes." A sound echo occurs because of two basic properties of sound: it travels at a limited speed, and it will reflect off of many surfaces...
Keywords: What -- GOES-O; What -- Earth; What -- Cassiopeia; What -- Spitzer Space Telescope
Downloads: 20
[image]The View from Within AU Microscopii's Disk - NASA/ESA/G. Bacon (STScI)
This is an artist's impression of the view from the vicinity of a hypothetical terrestrial planet and moon orbiting the red dwarf star AU Microscopii. The relatively newborn 12 million year-old star is surrounded by a very dusty disk of debris from the collision of comets, asteroids, and planetissimals swirling around the young star. Though no planets have been discovered around the star, the disk is strong circumstantial evidence for planets...
Keywords: What -- Moon; What -- COMETS; What -- Earth; What -- Cancer; What -- Sun
Downloads: 5
[image]At the Heart of Blobs - NASA/JPL-Caltech/R. Hurt (SSC)
This artist's concept illustrates one possible answer to the puzzle of the "giant galactic blobs." These blobs (red), first identified about five years ago, are mammoth clouds of intensely glowing material that surround distant galaxies (white). Astronomers using visible-light telescopes can see the glow of the blobs, but they didn't know what provides the energy to light them up. NASA's Spitzer Space Telescope set its infrared eyes on one well-known blob located 11 billion light-years away, and...
Keywords: What -- Visible Light; What -- Spitzer Space Telescope
Downloads: 8
[image]Lyman Spitzer, Jr. - OPO/STScI
Professor Lyman Spitzer, Jr. mountain climbing in the 1950s in the Swiss Alps above Zermatt, Switzerland. Both Professor Spitzer and his wife, Doreen, climbed the Matterhorn.
Keywords: Where -- Switzerland
Downloads: 13
[image]It's a Rocky World - NASA/JPL-Caltech/T. Pyle (SSC)
This artist's concept show a massive asteroid belt in orbit around a star the same age and size as our Sun. Evidence for this possible belt was discovered by NASA's Spitzer Space Telescope when it spotted warm dust around the star, presumably from asteroids smashing together. The view is from outside the belt, where planets like the one shown in the foreground, might possibly reside. A collision between two asteroids is depicted to the right...
Keywords: What -- Sun; What -- Spitzer Space Telescope; What -- Constellation; What -- Puppis; What -- Venus; What -- Mars; What -- Jupiter; What -- Advanced Communication Technology Satellite (ACTS); What -- Saturn
Downloads: 17
[image]TLRBSE Spitzer Teachers - NOAO
The "Teacher Leaders in Research Based Science Education" Spitzer Teachers in front of the National Optical Astronomy Observatory main buildiing in Tucson, Ariz.
Downloads: 4
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